How to Teach Siblings to Be Kind to Each Other

How do you teach siblings to be kind to each other? Start with a simple crawl-walk-run framework: don’t hurt, notice, then help.

Sep 25, 2026

If You Can’t Help, Just Don’t Hurt: Teaching Siblings to Be Kind to Each Other

The two dollars wasn’t what bothered me.
It was that my son waited until we weren’t home, went into his sister’s room, broke into her safe, and took it.
Her room.
Her safe.
The little place where a ten-year-old keeps the things she thinks are hers and protected.
And her brother went in and took from it so he could buy a Reese’s.
Later, he was sitting across from me with tears in his eyes.
“Was it worth it?” I asked.
“No.”
He knew.
I told him he hadn’t just taken two dollars.
He had broken trust with his sister. With me. With his mom.
I told him trust is like a glass. You can put it back together after it breaks, but it takes work.
And for what?
Two dollars and a piece of candy.
Afterward, he went upstairs.
I kept thinking about what I was actually trying to teach him.
“Don’t steal from your sister” was obvious.
“Be a good brother” felt too big.
I needed something smaller.
A place to start.
If you can’t help, just don’t hurt.

How to Teach Siblings to Be Kind to Each Other

We tell kids to “be nice” all the time.
But that’s a pretty vague instruction.
Share. Help. Include. Encourage. Show empathy.
Those are all good things.
They’re also advanced.
Maybe teaching siblings to be kind to each other works like learning anything else:
Crawl.
Walk.
Run.

The Crawl, Walk, Run of Becoming a Decent Human Being

Crawl: Don’t Hurt

Start here:
Don’t make someone else’s day worse.
Don’t go into your sister’s room.
Don’t take her stuff.
Don’t embarrass her.
Don’t provoke her because you’re bored.
You don’t have to do anything wonderful.
Just don’t do harm.
That’s the crawl.

Walk: Notice

Then comes awareness.
Your sister is struggling with something. Help her.
She looks upset. Ask what happened.
Someone is standing alone. Notice them.
I wrote about this in Teaching Kids Empathy in Real Life.
Before you can help someone, you have to notice them.
That’s the walk.

Run: Help Before You’re Asked

Eventually, you want helping to become instinctive.
You see someone struggling and step in.
You notice what needs to be done and do it.
You make someone’s day easier because you had the chance.
That’s the run.
But you can’t skip the crawl.

Sometimes Kindness Is Just Restraint

I realized this rule works pretty well for adults too.
Don’t send the angry email.
Don’t make the joke at someone else’s expense.
Don’t dump your bad mood onto everyone around you.
Don’t say the thing you know will hurt just because you’re angry enough to want to.
Sometimes being a decent human being isn’t about doing something great.
Sometimes it’s simply deciding not to do something shitty.
That counts too.

Start With the Crawl

I hope someday my son becomes the kind of brother his sister knows she can count on.
I hope he notices when people are struggling and steps in before they ask.
That’s the run.
For now, we’ll work on something smaller.
Stay out of her room.
Leave her stuff alone.
Don’t make her day harder just because you can.
Crawl first.
We’ll worry about running later.
If you can’t help, just don’t hurt.
“Know what’s enough. Build what matters.”